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Like rings on a tree, coral exoskeletons grow in layers, helping paleoclimatologists learn about weather trends and phenomena from as many as 500 years ago. When exposed to a synchrotron – one of the world’s most powerful X-ray machines – in a Stanford University lab, the coral’s secrets become even more pronounced, revealing weather patterns and ocean temperatures down to the week, and giving researchers a highly detailed and accurate look at weather over several centuries past.
Producer: Jason Jaacks
Website: Deep Look
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Chemistry
Why do the building blocks of life possess a mysterious symmetry?
12 minutes
video
Rituals and celebrations
A whale hunt is an act of prayer for an Inuit community north of the Arctic Circle
8 minutes
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Cosmology
Tiny, entangled universes that form or fizzle out – a theory of the quantum multiverse
11 minutes
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Astronomy
The history of astronomy is a history of conjuring intelligent life where it isn’t
34 minutes
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Politics and government
How it looked to Afghan women to see the Taliban return to power
33 minutes
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Metaphysics
Simple entities in universal harmony – Leibniz’s evocative perspective on reality
4 minutes
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Biography and memoir
Passed over as the first Black astronaut, Ed Dwight carved out an impressive second act
13 minutes
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The ancient world
The six priestesses who kept the flame of ancient Rome alight at risk of death
5 minutes
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Engineering
A close-up look at electronic paper reveals its exquisite patterns – and limitations
9 minutes